Accretion onto compact stellar objects (white dwarfs, neutron stars, and black holes) from companions in close binaries is the primary beacon for study of the astrophysics of the extreme: from endpoints of stellar and binary evolution, to the physical processes in the extremes of gravity, radiation, or magnetic fi elds. Accretion from the interstellar medium on the presumed still larger populat...

The focus here is on learning by school-age children, assisted by the family and/ or peers, and supported and managed by professional teachers. Keith Topping, who specialises in researching paired learning, provides an outline of the essential concepts of peer-assisted and parent-assisted learning, followed by discussion of some specific practical evidence of its use in reading, writing, spelli...

al monogamy4 and covert sex outside the main relationship. Delayed marriage and high divorce rates mean that growing numbers of individuals experience multiple sexual partners in a lifetime, and this greatly increases their exposure to infection. Furthermore, National Health and Social Life Survey data show that around 25% of men and 10% of women report extramarital or extracohabitational affai...

The neuromuscular blocking agent cisatracurium is frequently used adjunctively in anesthesia to facilitate endotracheal intubation and to provide muscle relaxation during surgery. We aimed to determine the pharmacokinetics (PK)/pharmacodynamics (PD) of cisatracurium in patients with congenital heart defects (CHDs), such as ventricular septal defects and atrial septal defects, and to assess the ...

ZnO nanoparticles (NPs) are engineered nanoparticles used in many commercial products inclusive of cosmetics, paints, textiles, and sanitary products. ZnO NPs are potent in protecting the skin against UV radiation so, they are used as ingredients in sunscreen and moisturizing creams/lotions and hence the study of their toxicity is essential. On the one hand, nanoparticles, due to their small si...